Category: 1821-27-8

Gharagheizi, Farhad published the artcileGene expression programming strategy for estimation of flash point temperature of non-electrolyte organic compounds, Quality Control of 1821-27-8, the publication is Fluid Phase Equilibria (2012), 71-77, database is CAplus.

The accuracy and predictability of correlations and models to determine the flammability characteristics of chem. compounds are of drastic significance in various chem. industries. In the present study, the main focus is on introducing and applying the gene expression programming (GEP) math. strategy to develop a comprehensive empirical method for this purpose. This work deals with presenting an empirical correlation to predict the flash point temperature of 1471 (non-electrolyte) organic compounds from 77 different chem. families. The parameters of the correlation include the mol. weight, critical temperature, critical pressure, acentric factor, and normal b.p. of the compounds The obtained statistical parameters including root mean square of error of the results from DIPPR 801 data (8.8, 8.9, 8.9 K for training, optimization and prediction sets, resp.) demonstrate improved accuracy of the results of the presented correlation with respect to previously-proposed methods available in open literature.

Fluid Phase Equilibria published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gharagheizi, Farhad published the artcileCorresponding States Method for Estimation of Upper Flammability Limit Temperature of Chemical Compounds, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Industrial & Engineering Chemistry Research (2012), 51(17), 6265-6269, database is CAplus.

The accuracy and predictability of predictive methods to determine chem. species flammability characteristics are critically important in the chem. industry. This work continued applying the gene expression programming math. strategy to modify existing thermophys. property correlations available in the literature to: optimize the number of independent parameters; amplify the generality; and improve accuracy and predictability. This work presented a simple corresponding states model to predict the upper flammability limit temperature for 1462 organic compounds from 76 chem. families. Correlation parameters included critical temperature and compound acentric factor. Obtained statistical parameters including average absolute relative deviation of results from the DIPPR 801 database values (1.7, 1.8, and 1.7% for training, optimization, and prediction sets, resp.) demonstrated improved accuracy of presented correlations.

Industrial & Engineering Chemistry Research published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gharagheizi, Farhad published the artcileComputation of Upper Flash Point of Chemical Compounds Using a Chemical Structure-Based Model, COA of Formula: C12H9N3O4, the publication is Industrial & Engineering Chemistry Research (2012), 51(13), 5103-5107, database is CAplus.

A quant. structure-property relationship is presented to estimate the upper flash point of pure compounds using a multi-linear equation model with 8 parameters. All parameters are solely computed based on chem. structure. To develop this model, >3000 parameters were evaluated using the genetic algorithm multi-variate linear regression method to select the most statistically effective ones. Maximum average absolute relative deviation (mARD), ARD, squared correlation coefficient, and root mean squares of error from database (DIPPR 801) values for 1294 pure compounds were 25.76%, 3.56%, 0.95, and 17.42 K, resp.

Industrial & Engineering Chemistry Research published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, COA of Formula: C12H9N3O4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Adamic, K. published the artcileFormation of radicals in the amine-inhibited decomposition of tert-butyl hydroperoxide, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Canadian Journal of Chemistry (1969), 47(2), 295-9, database is CAplus.

The radicals formed in the amine-inhibited, ¦Á,¦Á’-azobis(isobutyronitrile)-initiated decomposition of (tert-BuO)2 at 65¡ã were examined by E.S.R. In the absence of amine a strong peroxy radical signal is obtained. Amines with structures that do not correspond to those of conventional antioxidants (i.e. primary and secondary aliphatic amines and tertiary amines) generally have little or no effect on this signal. Nitroxide radicals are generated from secondary aromatic (diaryl and alkaryl) amines. The rate of conversion of these amines to nitroxides reached a maximum of 50-60% of the rate of chain initiation for some diphenylamines. A maximum concentration of nitroxide of about half the initial amine concentration was obtained with 4,4′-dimethyldiphenylamine. N ,N ,N’,N’-Tetramethyl-p-phenylenediamine is very rapidly oxidized by (tert-BuO)2 to give Wurster’s Blue cation and, presumably, a tert-BuO radical. This amine is therefore an initiator of oxidation rather than an inhibitor as has commonly been supposed. Primary aromatic amines do not appear to form simple aryl nitroxides. It is proposed that arylamino radicals are directly oxidized to nitroso compounds by peroxy radicals.

Canadian Journal of Chemistry published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tu, Yongqiang published the artcileSynthesis of 9-iminedibenzocycloiodonium salts, HPLC of Formula: 1821-27-8, the publication is Lanzhou Daxue Xuebao, Ziran Kexueban (1990), 26(1), 30-4, database is CAplus.

Cyclic iodonium compounds I (R, R¹ = NO₂, NHAc, Br, Cl, iodo; X = Cl, iodo) were prepared starting from 4,4′-dinitrodiphenylamine (II). E.g., iodination of II with I₂/SbCl₅ gave 75% 2,2′-diiodo-4,4′-dinitrodiphenylamine, cyclization of which with K₂S₂O₈/H₂SO₄ gave, after treatment with NaCl/HCO₂H, 45% I (R = R¹ = NO₂, X = Cl).

Lanzhou Daxue Xuebao, Ziran Kexueban published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C9H7NO4, HPLC of Formula: 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Pazoki, Farzane published the artcileMagnetic acyclovir-copper nanoparticle: DFT study and application as an efficient, magnetically separable and recyclable catalyst for N-arylation of amines under green condition, Quality Control of 1821-27-8, the publication is Inorganic Chemistry Communications (2020), 108240, database is CAplus.

A copper(I)-acyclovir complex supported on magnetic was designed and successfully synthesized. Catalytic activity and stability of two structures of copper(I)-acyclovir complex supported on magnetic were investigated by the theor. method. The more active and stable copper(I)-acyclovir complex supported on magnetic was applied as a catalyst for C-N cross-coupling reaction with high yield in a deep eutectic solvent (DES) as a green solvent. Also, these nanoparticles could be easily recovered and reused for new rounds of reaction without any considerable loss in catalytic activity.

Inorganic Chemistry Communications published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Opschoor, J. published the artcileStability of nitrocellulose propellants, HPLC of Formula: 1821-27-8, the publication is Internationale Jahrestagung – Fraunhofer-Institut fuer Treib- und Explosivstoffe (1983), 495-507, database is CAplus.

An investigation was started both into the mechanisms of the decomposition of propellants and into the interactions of NO₂ with the diphenylamine (I) [122-39-4] stabilizers. For this purpose the chem. behavior of amine compounds was studied from literature as well as from exptl. data on NO₂ (gas) and purified I and/or its derivatives During these experiments the composition of the I compounds was analyzed using liquid chromatog. techniques developed for these measurements. The investigation into the nitrosation reaction of I and its derivatives as observed at room temperature both gravimetrically and anal., will be continued with experiments at elevated temperatures which will lead to a temperature-dependent pattern in the behavior of the decomposition reactions of the stabilizer.

Internationale Jahrestagung – Fraunhofer-Institut fuer Treib- und Explosivstoffe published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, HPLC of Formula: 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Neugebauer, Franz A. published the artcileAminyls. 4. Thermal decomposition of p-substituted tetraarylhydrazines, Quality Control of 1821-27-8, the publication is Chemische Berichte (1971), 104(3), 886-9, database is CAplus.

Thermal decomposition of (p-RC6H4)2NN(C6H4R-p)2 (I, where R = Br, Cl, NO2, Me, or OMe) yielded the corresponding (p-RC6H4)2NH (II) and 2,7-di-(R-substituted)-5,10-bis[p-(R-substituted)phenyl]-5,10-dihydrophenazines (III). In the thermal decomposition of I (where R = Me or MeO) the corresponding 4,2-R[(p-RC6H4)2N]C6H3NHC6H4-R-p and [4,2-R[(p-RC6H4)2N]C6H3]2NH were also formed. The thermal decomposition of I (R = NO2) gave only the corresponding II.

Chemische Berichte published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Krylova, O. V. published the artcileVicarious C-amination of nitrobenzene, COA of Formula: C12H9N3O4, the publication is Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii) (2001), 37(6), 887-888, database is CAplus.

Aromatic amination of nitrobenzene with hydrazinium reagents [Me₃NNH₂]⁺X^– (X = Cl, Br, I) in the presence of tert-BuOK proceeded via a vicarious nucleophilic substitution of hydrogen to give p-nitroaniline and bis(p-nitrophenyl)amine.

Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii) published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, COA of Formula: C12H9N3O4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Correa, N. Mariano published the artcileBinding of nitrodiphenylamines to reverse micelles of AOT in n-hexane and carbon tetrachloride: solvent and substituent effects, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Journal of Colloid and Interface Science (1998), 208(1), 96-103, database is CAplus and MEDLINE.

The absorption spectra of N-[2-(trifluoromethyl)-4-nitrophenyl]-4-nitroaniline (1), N-[4-nitrophenyl]-4-nitroaniline (2), and N-[2-nitrophenyl]-4-nitroaniline (3) were analyzed in reversed micelles of AOT (sodium 1,4-bis(2-ethylhexyl sulfosuccinate)) in n-hexane and carbon tetrachloride. For 1 and 2 the intensity of the band characteristic for the pure solvent decreases as the AOT concentration increases and a new band develops. This new band is attributed to the solute bound to the micelle. These changes allowed us to determine the binding constant (Kb) between these compounds and AOT. Kb at W₀ = [H₂O]/[AOT] = 0 in n-hexane varies from 81 for 1 to 5092 for 2. Although similar trends are observed for carbon tetrachloride, the values of Kb are smaller than those for n-hexane. The possible solute-solvent interactions of these compounds were analyzed by means of Taft and Kamlet’s solvatochromic comparison method. The strength of binding is interpreted considering their hydrogen-bond donor ability as well as their solubility in the pure solvents. For 1 Kb decreases as W₀ is increased, while for 2 no variation was observed These effects are discussed in terms of nitrodiphenylamine-water competition for interfacial binding sites. Moreover, the effect of the solute size and the presence of the trifluoromethyl group in 1 are important factors to consider in explaining its binding behavior. The spectra of 3 change very little with AOT concentration and only a slight bathochromic shift is observed Thus, 3 acts as nonhydrogen bond donor solute, merely sensing a slight change in the polarity of its microenvironment. (c) 1998 Academic Press.

Journal of Colloid and Interface Science published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia